如何在v4节点SDK BOT上保持对话框堆栈

Question

我已经习惯了v3节点botbuilder sdk，所以我有一个中间件，我在那里查看对话框堆栈，并按照以下方式进行操作。

知道对话框堆栈的V3中间件： -

bot.use({
    botbuilder: function (session, next) {

        if (session.dialogStack()&& session.dialogStack().length <= 0 ) {
            // Do something is dialog stack is empty.
        }

    },
    send: function (event, next) {
        if (event.type != "typing" && event.type != "endOfConversation") {
            logUserConversation("Botoutput", event);
        }
        next();
    }
});

V4中间件，我需要使用对话框堆栈来执行一些操作。

adapter.use(async (turnContext, next) => {
            // pre-processing of the current incoming activity
            turnContext.onSendActivities(async (sendContext, activities, nextSend) => {
                // console.log(`pre-processing of outgoing activities`);
                await nextSend();

         ***//Need to know the dialog stack here.***


            });
            await next();
        });

我查看了turnContext对象，但没有迹象表明是否有对话框堆栈。 我可以看到DialogContext对象有一个'stack'属性，但不知道如何在我的中间件中使用。

Answer 1

您只需要添加activities.filter方法来检索传递的直通数据，就可以了。

const conversationState = new ConversationState(memoryStorage);
const userState = new UserState(memoryStorage);

adapter.use(async (turnContext, next) => {

    const userActivity = turnContext.activity;
    if (userActivity.from.role === 'user' && turnContext.activity.text.length > 0) {
        console.log('From user: ', userActivity);
    }

    turnContext.onSendActivities(async (sendContext, activities, nextSend) => {
        await nextSend();

        activities.filter(a => a.type !== 'typing' && a.type !== 'endOfConversation').forEach(a => console.log('From bot: ', a));
    });

    await next();
});

希望有所帮助！